AMG Critical Materials has been granted a patent for an EIGA coil designed for partial melting of electrodes. The coil features coaxially arranged, axially spaced windings shaped as interrupted rings, connected by portions, with gaps ranging from 0.5 mm to 30 mm. GlobalData’s report on AMG Critical Materials gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on AMG Critical Materials, was a key innovation area identified from patents. AMG Critical Materials's grant share as of June 2024 was 50%. Grant share is based on the ratio of number of grants to total number of patents.
Eiga coil for partial melting of an electrode
The granted patent US12048081B2 introduces an innovative Electrode Induction Melting and Atomization (EIGA) coil designed for melting electrodes. The coil features multiple coaxially arranged windings that are axially spaced and shaped as rings with gaps, which range from 0.5 mm to 30 mm in width. Each winding is connected to adjacent ones via a connecting portion, and the design allows for variations in inner diameters among the windings, with the largest diameter ranging from 40 mm to 300 mm and the smallest from 10 mm to 100 mm. The coil can also exhibit different cross-sectional geometries and is constructed from ceramic-free copper, utilizing an additive production process.
Additionally, the patent outlines an apparatus for executing the EIGA method, which includes the EIGA coil, a coaxially arranged electrode that can be displaced along its longitudinal axis for melting, and a nozzle for atomizing the melted electrode material. The method of producing high-purity metal powder involves displacing the electrode relative to the EIGA coil while applying alternating current to generate Lorentz forces that facilitate the melting process. This technology aims to enhance the efficiency and quality of metal powder production, making it a significant advancement in the field of materials processing.
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